EP 0040254 A1 19811125 - Process for preparing carboxylic acids by reaction of alkali metal carboxylates and liquid cation exchange agents.
Title (en)
Process for preparing carboxylic acids by reaction of alkali metal carboxylates and liquid cation exchange agents.
Title (de)
Verfahren zur Herstellung von Karbonsäuren durch Reaktion von Alkalimetallkarboxylaten und flüssigen Kationenaustauschern.
Title (fr)
Procédé pour la préparation d'acides carboxyliques par réaction de carboxylates de métaux alcalins et d'échangeurs liquides de cations.
Publication
Application
Priority
EP 80102737 A 19800516
Abstract (en)
A carboxylic acid is prepared by contacting an aqueous solution of the alkali metal or ammonium carboxylate with a liquid cation-exchange agent dissolved in an organic solvent in which the acid is water-immiscible. As an example, an aqueous solution of trisodium N-(2-hydroxyethyl)ethylenediaminetriacetate is contacted with di(2-ethylhexyl)phosphoric acid in kerosene to thereby form N-(2-hydroxyethyl) ethylenediaminetriacetic acid in the aqueous solution.
IPC 1-7
IPC 8 full level
C07C 51/02 (2006.01)
CPC (source: EP)
C07C 51/02 (2013.01)
Citation (search report)
- US 2895989 A 19590721 - SEXTON ARTHUR R
- CHEMICAL ABSTRACTS, Vol. 71, No. 5, 4th August 1969, page 266, No. 25157k Columbus, Ohio, U.S.A. I. KOJIMA et al.: "Extraction of Copper (II) and Sodium with Bis(2-Ethylhexyl) Hydrogen Phosphate" & J. Inorg. Nucl. Chem. 1969, 31(6), 18-15-1820 * Abstract *
- C.R. Acad. SC. Paris, Serie C, Vol. 267, 18th November 1968, pages 1373-1376 Montreuil, FR. Y. MOGNO et al.: "Etude du Schema d'Extraction des Metaux Alcalins et Alcalino-Terreux par les Acides Di-Alcoylphosphoriques" * whole document *
- CHEMICAL ABSTRACTS, Vol. 78, No. 10, 12th March 1973, page 305, No. 62933a Columbus, Ohio, U.S.A. V.P. LANIN et al.: "Extraction of Sodium, Rubidium, and Cesium from Perchlorate Solutions by Di-2-Ethylhexylphosphoric Acid" & Radiokhimiya 1972, 14(5), 671-674 * Abstract *
Designated contracting state (EPC)
DE FR GB NL SE
DOCDB simple family (publication)
EP 0040254 A1 19811125; EP 0040254 B1 19830713; DE 3064100 D1 19830818
DOCDB simple family (application)
EP 80102737 A 19800516; DE 3064100 T 19800516